La aterradora escala de los agujeros negros

❓ What is the actual size of black holes? ✅ From Mbappé's Schwarzschild radius to TON 618: why the "size" of a black hole is not what you imagine. In this video, we explore a simple yet brutal idea: if you compress anything below its Schwarzschild radius, a black hole is born, and the event horizon appears. We go from the absurdly small (75 kg reduced to ~10⁻²⁵ m) to what we can finally visualize: the Earth reduced to a 9 mm "marble" or the Sun concentrated within a 3 km radius, comparable to that of a city like Barcelona. And, as if that weren't enough, these tiny black holes evaporate at breakneck speed due to Hawking radiation, returning their mass in the form of a colossal release of energy. Then we move from fantasy to real candidates: why everything points to a minimum of about three solar masses, how close Gaia BH1 is (1,560 light-years), and what it means for a black hole to be “smaller” than the metropolitan area of a large city. From there, the scale shatters: HLX-1 as a bridge to the giants, Sagittarius A* at the center of the Milky Way, M87* devouring the idea of a “solar system,” and TON 618 pushing the concept to its limits, with a horizon so vast that light would take two weeks to cross it from one side to the other. In the end, what's unsettling is not just how big they can be, but how small we still are compared to them. 00:00 Everything can be a black hole 01:53 When a hole dies 03:22 Compatibility of planets and the Sun 04:57 The little ones 05:45 The closest 06:18 Those of intermediate mass 07:20 The supermassive Music by Artlist. #whatif #blackholes #universe #cosmos #blackhole